Insulating material



`m., 2Q. `i925T 51,523,762

W. J. MOELLER ET AL,

INSULATI NG MATERIAL Filed March 5. 1922 Patented Jan. 20, 1925.

UNlTED STATES l 1,523,702 PATENT OFFICE.

WILLIAM J. MOELLER AND HENRY J. KA'BBES, OF WYOMING, OHIO.

INSULATING MATERIAL.

Application filed March 3, 1922. Serial No. 540,878.

To all 'whom it may concern;

Be it known that We," WILLIAM J. MoELLnn and HENRY J. KABBES, citizens of the United States, and residents ot' Wyoming, in the county of Hamilton, State of Ohio, Whose post-office addresses are QWyoming, Ohio, have invented new and usei'ul improvements in insulating Materials, of which the following is a specification.

Our invention relates to heat insulating materials.

ln the drawings Fig. 1 is a cross section of a pipe covering embodying our invention.

Fig. 2 is a modification thereof'.

Figs. 3 and 4 are cross sections of paper used in manufacture of our covering.

Fig. 5 is a plan view of the under side of Fig. 4.-.

Figures 6 and 7 are plan views of opposite surfaces of Fig. 3.

Figures 8 and 9 are insulating blocks embodying our invention.

Fig. l0 is an insulating block embodying a modification thereof.

Fig. 1l is a modification of our invent-ion.

In the drawings, in Which like letters refer to like parts A. is a sheet or ply of suitable material, such as asbestos paper, which in the manufacture thereof has been made so that one surface is crped, crinkled or provided with innumerable idcxures or elevations or ridges l of varying heights and the opposite surface with innumerable small indentations L. Such crping or crinkling and indenting of the paper surface permits the paper to be readily indented or embossed without breaking the saine. The paper ft, We prefer to treat with a surface sizin(y of, or to saturate it with, a suitable material such as silicate of soda which tends to stiifen the shee rllhe sheet or pl` A of asbestos paper, is einhossed as at l?, B in any suitable manner forming the embossed sheet l, lille have found that by passing it between tivo rolls, one of which is provided with a yielding surface, such as rubber or felt, While the other roll is provided With nonyielding projections, the sheet A. is embossed or indented. The embossed projections B or indentations C may be of any configuration but a highly satisltactory insulating material may be manufactured by having the projections B or indentations C irregularly arranged. n Fig. 5 we have some of embossed projections as long and narrow and arranged parallel, the adjacent intermediate ones being at right angles thereto. The crinkled indented sheets so embossed are readily made Without breaking due to the greater amount of paper between projections to carry the strain and permit of the necessary stretching in any direction.

Our improved insulating material may consist of one ply, or of a plurality of plies, ot' the embossed paper D depending upon the thickness of material desired. In one form of our invention shown in Figures l and 8 We have shown a plurality of enibossed asbestos plies D separated by asbestos sheets A which may be plain surfaced it desired, and held together by suitable adhesive E suoli as silicate of soda. Preferably We arrange the adhesive so that there are intervening spaces where the sheets A. and D are not held in engagement.. lly this arrangement ofthe adhesive as shown in Figure 8 the finished material is built up so that it has areas G `vvhich are comparatively solid and other cushion like areas F. The adhesive may be arranged so as to form the comparatively solid areas G, either in lilies to encircle the pipe, or lines longitudinally of the pipe or in a number of disconnected areas which could be obtained by spotting the adhesive. y

Our improved insulating material is composed of an innumerable number of cells for entrapping air, having suthcient rigidity to hold it in desired forni and flexible enough to permit its ready application.

ln Figure 9 We have shown a modification in Which is assembled a plurality el' embossed asbestos plies D Without any intervening sheets. ln Figure 9 We have also shown a modification et the means for attaching the plies together consisting of staples or wire stitches lil. Either adhesive E or stitches FK may be used for attaching the various plies of our insulating material together. v

ln Figure l0 we have shown a form of covering niade of a number of plies of crinkled or crpcd surfaced asbestos paper Without any embossing.

ln some forms of our i vention We provide on the exterior of the insulating material protect-ive or liner sheets ll of asbestos paper or other suitable material which may be either plain or crped or criuklcd sheets `We p rofeiably make the liner ll, which is lOS lll)

to come linto contact fwitlr the surface being covering we prefer to surround the matev b v metal bands 'l rial with a jacket of suitable woven mate' rial such as canvas, etc. As shown in Fig. l the pipe covering is formed of two sections attached by canvascover I or other 'suitable vmaterial which acts as a hinge.l In Fig. 2 the cylindrical covering is separated longitudinally at J so as to be sprung apart and placedaout a pipe. j

In Figure 11 We have shown a'modification of our heat insulating unit for cylindri-v cal surfaces made ofy a number of plies D covered with canvas or linen I which passes around the edges and cemented as shown on the inner side; thereby forming edges adapted to be brought together or if desired they may be beveled to overlap. This .modification is especially adapted to lbe used encircling same. By the use of crped orcrinkled indented on hot Water tan s, etc., and is held in place paper Whichjweemboss we have found a lighter Weigthfpapercan beused than heretofore whichv 'greatly reduces the Weight of the insulating material While lat the same vtime increasing its nonheat conducting qualities. .l

Claims: .Y r v p. l. Anvinsulating vmaterial composed of a y plurality of embossed plies of sheet material,

said sheet lmaterial .ha-ving independent of said embossing an lrregular uneven surface on 'one side and a non-corresponding uneven surface onthe oppositel side.

a -Ari' insulating material composed of a plurality of plies of 'embossedfsheeta each of said sheetsV having a plurality of embossed portions of greater length than breadth each of said portions arranged at an angle to the next adjacent portion.

` 3. A cylindrically formed insulating ma'- teri'al composed of a plurality 'of plies of embossed sheets, each of said sheets having a plurality of embossing portions of greater length than breadth each of said portions aranged at an angle to the nextl adjacent portion, and a cementing material arranged to form bands at intervals to cement said plies together.

4. An insulatingV element formed of a `plurality of plies of mineral paper having lrregular ridges on one surface kand non-con-v forming :indentations on the opposite face thereof.

5. An insulating element formed of aV plurality of plies of embossed mineral paper having independently of said embossing irregular ridges on one surface and indenta'- tions on the opposite face thereof, and

spaced apart means for holding same to-j gether.

6. An insulating element formed of a plurality of plies of asbestos paperhaving irregular ridges on one surface and non-conformlng lndentatrons on the 'opposlte face thereof, an outer cover for said element .passing around an edge .thereof and aixed' Yto the under side thereof.

In testimony whereof, we have signed our i names to lthis specification. 

